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continued with draw.c and draw.h implementation, now the integration begins

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Anselm R Garbe 2012-12-09 19:11:11 +01:00
parent f21d46ea7d
commit aafeaf7317
2 changed files with 71 additions and 29 deletions
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75
draw.c
View file

@ -1,6 +1,7 @@
/* See LICENSE file for copyright and license details. */ /* See LICENSE file for copyright and license details. */
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h> #include <X11/Xlib.h>
#include "draw.h" #include "draw.h"
@ -55,7 +56,6 @@ draw_font_create(Draw *draw, const char *fontname) {
if(font->set) { if(font->set) {
XFontStruct **xfonts; XFontStruct **xfonts;
char **font_names; char **font_names;
XExtentsOfFontSet(font->set); XExtentsOfFontSet(font->set);
n = XFontsOfFontSet(font->set, &xfonts, &font_names); n = XFontsOfFontSet(font->set, &xfonts, &font_names);
while(n--) { while(n--) {
@ -107,49 +107,96 @@ draw_col_free(Draw *draw, Col *col) {
void void
draw_setfont(Draw *draw, Fnt *font) { draw_setfont(Draw *draw, Fnt *font) {
if(!draw || !font) if(!draw)
return; return;
draw->font = font; draw->font = font;
} }
void void
draw_setfg(Draw *draw, Col *col) { draw_setfg(Draw *draw, Col *col) {
if(!draw || !col) if(!draw)
return; return;
draw->fg = col; draw->fg = col;
} }
void void
draw_setbg(Draw *draw, Col *col) { draw_setbg(Draw *draw, Col *col) {
if(!draw || !col) if(!draw)
return; return;
draw->bg = col; draw->bg = col;
} }
void void
draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h) { draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h, Bool filled, Bool empty, Bool invert) {
if(!draw) int dx;
if(!draw || !draw->font || !draw->fg || !draw->bg)
return; return;
/* TODO: draw the rectangle */ XSetForeground(draw->dpy, draw->gc, invert ? draw->bg->rgb : draw->fg->rgb);
dx = (draw->font->ascent + draw->font->descent + 2) / 4;
if(filled)
XFillRectangle(draw->dpy, draw->drawable, draw->gc, x+1, y+1, dx+1, dx+1);
else if(empty)
XDrawRectangle(draw->dpy, draw->drawable, draw->gc, x+1, y+1, dx, dx);
} }
void void
draw_text(Draw *draw, int x, int y, const char *text) { draw_text(Draw *draw, int x, int y, unsigned int w, unsigned int h, const char *text, Bool invert) {
if(!draw) char buf[256];
int i, tx, ty, len, olen;
TextExtents tex;
if(!draw || !draw->fg || !draw->bg)
return; return;
/* TODO: draw the text */ XSetForeground(draw->dpy, draw->gc, invert ? draw->fg->rgb : draw->bg->rgb);
XFillRectangle(draw->dpy, draw->drawable, draw->gc, x, y, w, h);
if(!text || !draw->font)
return;
olen = strlen(text);
draw_getextents(draw, text, olen, &tex);
ty = y + (h / 2) - tex.yOff;
tx = x + tex.xOff;
/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && tex.w > w - tex.h; len--)
draw_getextents(draw, text, len, &tex);
if(!len)
return;
memcpy(buf, text, len);
if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
XSetForeground(draw->dpy, draw->gc, invert ? draw->bg->rgb : draw->fg->rgb);
if(draw->font->set)
XmbDrawString(draw->dpy, draw->drawable, draw->font->set, draw->gc, tx, ty, buf, len);
else
XDrawString(draw->dpy, draw->drawable, draw->gc, tx, ty, buf, len);
} }
void void
draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h) { draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h) {
if(!draw) if(!draw)
return; return;
/* TODO: map the draw contents in the region */ XCopyArea(draw->dpy, draw->drawable, draw->win, draw->gc, x, y, w, h, x, y);
XSync(draw->dpy, False);
} }
void void
draw_getextents(Draw *draw, const char *text, TextExtents *extents) { draw_getextents(Draw *draw, const char *text, unsigned int len, TextExtents *extents) {
if(!draw || !extents) XRectangle r;
if(!draw || !draw->font || !text)
return; return;
/* TODO: get extents */ if(draw->font->set) {
XmbTextExtents(draw->font->set, text, len, NULL, &r);
extents->xOff = r.x;
extents->yOff = r.y;
extents->w = r.width;
extents->h = r.height;
}
else {
extents->h = draw->font->ascent + draw->font->descent;
extents->w = XTextWidth(draw->font->xfont, text, len);
extents->xOff = extents->h / 2;
extents->yOff = (extents->h / 2) + draw->font->ascent;
}
} }

25
draw.h
View file

@ -13,19 +13,7 @@ struct _XFont {
XFontStruct *xfont; XFontStruct *xfont;
}; };
typedef struct _XFont Fnt; typedef struct _XFont Fnt;
/* X11 types - end */
typedef struct {
unsigned int w;
unsigned int h;
int x;
int y;
int xOff;
int yOff;
} TextExtents;
/* X11 types - begin */
typedef struct _XDraw Draw; typedef struct _XDraw Draw;
struct _XDraw { struct _XDraw {
unsigned int w, h; unsigned int w, h;
@ -39,6 +27,13 @@ struct _XDraw {
Fnt *font; Fnt *font;
}; };
typedef struct {
unsigned int w;
unsigned int h;
int xOff;
int yOff;
} TextExtents;
/* Drawable abstraction */ /* Drawable abstraction */
Draw *draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h); Draw *draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
void draw_resize(Draw *draw, unsigned int w, unsigned int h); void draw_resize(Draw *draw, unsigned int w, unsigned int h);
@ -58,12 +53,12 @@ void draw_setfg(Draw *draw, Col *col);
void draw_setbg(Draw *draw, Col *col); void draw_setbg(Draw *draw, Col *col);
/* Drawing functions */ /* Drawing functions */
void draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h); void draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h, Bool filled, Bool empty, Bool invert);
void draw_text(Draw *draw, int x, int y, const char *text); void draw_text(Draw *draw, int x, int y, unsigned int w, unsigned int h, const char *text, Bool invert);
/* Map functions */ /* Map functions */
void draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h); void draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h);
/* Text functions */ /* Text functions */
void draw_getextents(Draw *draw, const char *text, TextExtents *extents); void draw_getextents(Draw *draw, const char *text, unsigned int len, TextExtents *extents);